This study examined the unique and joint contributions of engineering students' classroom and out-of-class experiences on the development of two sets of skills central to students' successful performance as engineers: analytical and group skills. Although the study focuses on engineering, the conceptual underpinnings and criterion measures are relevant to studies of teaching and learning in other fields. Multiple regression analyses using data from 4198 graduating engineering students on 39 campuses nationwide indicate that, after controlling an array of students' precollege characteristics, both students' classroom and out-of-class experiences make statistically significant and independent contributions to student learning in both skill areas.